[koop, koo p]


an enclosure, cage, or pen, usually with bars or wires, in which fowls or other small animals are confined for fattening, transportation, etc.
any small or narrow place.
Slang. a prison.
Sometimes Facetious. a cooperative, especially the cooperative bookstore of a college or university.

verb (used with object)

to place in or as if in a coop; confine narrowly (often followed by up or in).

verb (used without object)

Slang. (of a police officer) to park and sleep inside one's patrol car while on duty.

Nearby words

  1. cooner,
  2. coonhound,
  3. coonskin,
  4. coontie,
  5. coony,
  6. coop.,
  7. cooper,
  8. cooper city,
  9. cooper creek,
  10. cooper pair


    fly the coop, Informal. to run off; depart abruptly; escape: We stopped to see my sister, but she'd flown the coop.

Origin of coop

1250–1300; Middle English coupe basket, perhaps < Scandinavian; compare Norwegian kaup wooden can; akin to Old English cȳpa basket

Related formsun·coop, verb (used with object)

Can be confusedco-op coop co-opt coupe.


[noun, adverb koh-op; verb koh-op, koh-op]


a cooperative store, dwelling, program, etc.

verb (used with object), co-oped or co-opped, co-op·ing or co-op·ping.

to place in a cooperative arrangement, especially to convert (an apartment or building) to a cooperative.


(of a game, especially a video game) cooperative, requiring players to work together to achieve a common objective:co-op play modes;co-op multiplayer games.

Origin of co-op

First recorded in 1860–65; shortened form

Related formsco-op·er, noun

Can be confusedco-op coop co-opt coupe


or co-op Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for coop

British Dictionary definitions for coop




a cage or small enclosure for poultry or small animals
a small narrow place of confinement, esp a prison cell
a wicker basket for catching fish


(tr; often foll by up or in) to confine in a restricted area

Word Origin for coop

C15: probably from Middle Low German kūpe basket, tub; related to Latin cūpa cask, vat


a cooperative, cooperative society, or shop run by a cooperative society

the internet domain name for

a cooperative



abbreviation for

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for coop
Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with coop


see fly the coop.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.